Ebay as stated is a hit or miss deal many "pretty" and/or "big name razors (puma, DD,wb and the like) sell more for bragging rights and the prices go up noticeably the last few minutes. a nice clean blade by a lesser hyped maker often goes for near the opening bid. properly honed and stropped there is no difference in the shave.

of the 3 razors you listed go with the Dovo.... the other 2 are very nice if they are vintage models but the current production ones often are not quite good.

enjoy,
jim